A Two-Rectangular Coils Wireless Charging Electric Vehicle with Photovoltaic Generator

Abstract

Electrical vehicle (EV) wireless charging system is more advantaged than the using a cable charging system due to its simplicity operation, robust, and safety. The basic principle of wireless power transfer (WPT) system is based in the inductive coupling between the primary (transmitter) and secondary (receiver) coils. The WPT system and the photovoltaic generator (PVG) can be can be integrated to furnish renewable source for charging electric vehicle. In fact, the PV generator power can be transferred wirelessly to an EV battery across a gap using the principle of the magnetic induction. Therefore, this paper proposes and describes a novel WPT system with PV generator. Initially, a modeling of a photovoltaic source is studied and the characteristics of a PV module are presented. Then, in order to ensure the optimal PV generator power a DC/DC converter with MPPT control based on perturb and observe algorithm has been used. On the other hand, a typical WPT system consists of a transmitter coil (500mm*200mm) and a receiver coil (200mm*100mm) was constructed in this work. In addition, the coupling coefficient is plotted as function of air gap between transmitter and receiving coils. It can be noted that the coupling coefficient rapidly decreases when the air gap increases. Finally, the globally system was developed in Matlab/Simulink to transfer 1kW via a 100mm gap with 90% the efficiency.